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IMAX at home

Discussion in 'TVs' started by intelly, Aug 26, 2004.

  1. intelly

    intelly
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    Has anyone got details on the shape of the IMAX screen? When viewing WMVHD discs encoded from IMAX source the picture shows the distortion from the IMAX lenses. :rolleyes:

    Would it be possible to use a projector and shaped screen to present the same type of IMAX viewing experience on a personal level?
    :eek:
     
  2. Mr.D

    Mr.D
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    Imax uses very wide angled lenses.
    Even a spherical 35mm film shot with wide lenses has noticable lense distortion ( scope films are even worse).

    In other words : its unlikely the picture is incorrectly formatted, its an accepted cinematic convention that really wide shots exhibit lens distortion.
     
  3. Abit

    Abit
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    If I remember correctly the IMAX screens have a wicked curve from the sides towards the audience.
     
  4. Mr.D

    Mr.D
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    The parabolic screen in certain cinemas is beside the point. Its all about maximising the percieved angle of view not about correcting a specific lens distortion. You can find parabolic screens in use in some normal cinemas for the same reason.

    If you ever watch an Imax feature you'll see numerous different lens angles used and the distortion will change accordingly from shot to shot just like any other movie.
     
  5. 37monkey

    37monkey
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    I may be wrong, but,
    wouldn't you need two projectors sending polarised (http://www.jyi.org/features/ft.php?id=987) images 90 degrees to each other and with slightly differing angles, so that the glasses you wear sort out the images seperatly for each eye? hence why imax is either filmed with expensive camera systems or computer generated. Next time you go to an imax cinema tip your head to one side and you'll get a kinda double vision
     
  6. mike7

    mike7
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    You're talking about IMAX 3D. Not all IMAX is in 3D. DVDs of IMAX productions are not 3D as far as I know,
     
  7. BISHI

    BISHI
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    Imax is a large format film ( I think it's just over 70 mil) This is the reason it is so sharp an image, 1080p is the highest resolution available at home at the moment, a 70+ mil film frame is magnitudes of 10s, perhaps even 100s greater resolution than the best digital res' as it is film grain and not pixels that makes up the image. To get the full Imax effect at home you would still need a tennis court sized screen to view it on !!
     

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